why transformer ratings are taken in 11kv 22kv 33kv but not in 10,20,30kv

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why transformer ratings are taken in 11kv 22kv 33kv but
not in 10,20,30kv

Question Posted / anilnandyala

5 Answers
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why transformer ratings are taken in 11kv 22kv 33kv but not in 10,20,30kv..

Answer / sushil

for ease and precision in transformation of voltage, ratio
should be in the multiple of form factor 1.11.

Is This Answer Correct ?

36 Yes

5 No

why transformer ratings are taken in 11kv 22kv 33kv but not in 10,20,30kv..

Answer / medoo

the same answer

Is This Answer Correct ?

9 Yes

0 No

why transformer ratings are taken in 11kv 22kv 33kv but not in 10,20,30kv..

Answer / shilpa

plz...dont give stupid answers lyk the previous one.

its becoz of the form factor which is 1.11 of sinusoidal
wave as transformer involves pure sinusoidal ac supply.

Is This Answer Correct ?

4 Yes

1 No

why transformer ratings are taken in 11kv 22kv 33kv but not in 10,20,30kv..

Answer / madhav

form factor of sinusoidal wave=rms/avg..its value should be
1.11. so rms=1.1*avg. for example..10kV*1.1=11kV....

Is This Answer Correct ?

3 Yes

0 No

why transformer ratings are taken in 11kv 22kv 33kv but not in 10,20,30kv..

Answer / akshay

becoz generated EMF=4.44f*N*flux Volts, so the vale of
NFand fluz will be multiply by 4.44 so its look like in the
form of 11,22,33 etc

Is This Answer Correct ?

4 Yes

2 No

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